First Edit: No Such Things as Happy Endings

[danny_]

You've introduced some clarity but also some unnecessary stuff that doesn't help the overall image. I know this isn't easy. Something that may help: meditate on the entire scene and make a list of the most important or touching aspects. Revolve the poem around those. That is probably vague advice.

No Such Things as Happy Endings

I didn't know at the time, < Perhaps avoid "I" at the very start of your poem unless the line is very engaging, but this line is a bit dull. You don't really need it.
but I was actually greeting death
when I kissed you goodbye. 
Your cheek reeking < Stick with past-tense if you're starting a new sentence. "Reeked"
of poisonous medicine, < poisonous is not technically fair, as it was intended to help, right? Toxic, though, undoubtedly.
head bald.
I thought it was going < Consider removing 'I' here again and the 'I' before 'thought', because if you let it run up to "I'd drink another cup", you can skip both those.
to be just another sleepless night < Line break on 'going' doesn't add much.
reading year old health magazines
in the hospital dayroom, < May not need this line because between "medicine" and "cafeteria" we can possibly assume hospital.
I thought I'd drink another cup
of cafeteria coffee
and comment to the cashier about the weather.
I was wrong. < Too bland and telling.

I should stop commenting on the grammar and line breaks. A larger issue here is I kind of miss the idea behind the old lines:
     you used to tell me how dad first noticed you 
     because of your curly hair.
These lines bring the relationship into the picture and create a more touching image. I modified the line break too.

When I slept the next morning, I dreamed
of my grandmother, drinking her third beer < Perhaps grandma doesn't really need to be mentioned as she doesn't seem to be related to the meaning of this poem.
from a porcelain mug. Beside her < I know it's a dream but dreaming of grandma drinking a 3rd (specifically 3rd) beer doesn't help the overall image of the poem for me.
was the grandfather I never met.
He smiled like a priest, < I'm not sure exactly how a priest smiles, because they all look different.
recited an unfamiliar prayer.
When he asked for my hand, I refused, < Not sure why he's asking for your hand, but it is a dream after all.
not out of fear, but because
I knew what he stole from you. < I know what you want to do with this line but only because we talked about it. For the reader this is still very vague. Perhaps "passed on to you"?

There's a ways to go to get this to the point of fluid clarity. It's all worth while, we learn as we go when we post here. Keep it up, ponder the image you want to convey, make every line count and remember to capture the relationship so we can feel something when we read this. There's a lot of lines about a dream and so few about the real issue. Take your time. Look forward to an update.